String Study Group

Theoretical Particle Physics Seminar

19 February 2008 kl. 14:15

Speaker: V. Niarchos, Ecole Polytechnique
Title: Exploring the Dynamics of Orientifold QCD
Abstract: Combining Seiberg duality in N=1 SQCD with planar equivalence between SQCD and a non-supersymmetric QCD-like orientifold daughter (OQCD) we argue for a non-supersymmetric Seiberg duality. We make a precise proposal for this duality beyond the planar limit and consider its implications for the strongly coupled IR dynamics of OQCD - for example, we get the exact range of the conformal window. Supporting evidence for this picture arises from string theory, where Seiberg duality can be m...Read more

Ice deposits at the poles of the Moon and Mercury

07 February 2008 kl. 12:30

Professor David A. Paige, University of California, Los Angeles, is
visiting Centre for Ice and Climate. David A. Paige is renowned for his
research on extraterrestrial ice and climate research, e.g. the ice on
the polar caps and climate of Mars, the ice deposits on Mercury and the
Moon; and the polar caps of Pluto and Triton.
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Theoretical Particle Physics and Cosmology Seminar

Theoretical Particle Physics Seminar

31 January 2008 kl. 14:15

Speaker: M. Vonk, Utrecht
Title: Deforming, revolving and resolving - new paths in the string theory landscape
Abstract: String theory vacua with different flux quanta seemingly form a discrete set, but can in fact often be continuously connected by applying monodromies of the Calabi-Yau geometry. Such continuously connected vacua are interesting from the point of view of cosmology, and for constructing domain walls, for example. An intriguing question is which vacua can continuously be connected in this way, and which cannot. I discuss the example of the mirror quintic, and show that there is an extra...Read more